ISSNO4NIRS･二RADIOACTIVISIJRVEY∵DA

inJa

NUM月
別breh

RadioactivitySurveyData
inJapanNumber64
March1983

Contents

EnvironmentalMaterials…………‥･‥‥■■===̀■‥‥■‥‥‥■■‥■/J叩∂〃αe/れ血∂/月〃∂/四海Ce〃托〃
1.CoIIectionandpretreatmentofsampIes
2.PreparationofsamplesforanalysIS…………===…●‑‑'‥………‥･,･……‥‥‥====

3.SeparationofStrontium･90andCesium･137･………‥･･･‥‥…･････
4.DeterminationofStabIestrontium,CalciumandPotassium
5.Counting
6.Resu他……･‥･■･‥■‥‥‥‥‥‥‥･‥‥‥=■===‥‥‥■‥‥■■■■■‥‥‥‥‥‥‥‥‥‥‥‥‥･‥‥･==■■■■==‥‥■■■‥■‥■■‥‥■(1)･1Strontium･90andCesium･137inRainanddryfa"out(fordomesticprogram).2‥…･･‥…･

Strontium･90andCesium･137inRainanddryfallout…………･(forWHOProgram)(2)

Strontium･90andCesium･137inAirbornedust(3)

Strontium･90andCesium･137inServicewater…･･………=■l(4)

Strontium‑90andCesium･137inFreshwater…･H･･････…･=……………‥‑･l｢力p∂〃C/7e〝7/c∂/月〃∂/y∫ねCe〃rerノ

CoIlectionandpretreatmentofsampIes

samplingtray,aPPrOXimatety5000cm2inarea′Which
to

water

with

a

depth

the

at

oflcm

beglnnlngOfeverymonth.
The

effec!ofsampIeswere
just before
a

after

strontiumandthroughpasseda

Dowex50W
exchangecoIumn(500m史Of
100mesh,Naform)atarateof80m史/min･

cationX8.50〜′

ヒPOIyethylenecontainers･T
we[IashundredprecipitatoratamonthsThe

sampling

or

a

rate

of

was

collected

filter air sampIer
more

an

eIectrostatic

for

every

three

than3000m3permonth.

doneltol･5meters

the

above

ground.

Ch10rinity.

(6〉 Seasediments
Sediment
for thea.

coIIecte

seawatersample.taco"ected

at

an

b.

intakeofthewater･treatmentPlantandatthetapafter
WaSleftadded

runnlng

forfive minutes.Water,tO

carriers ofstrontium

andcesiumimmedi‑

ate[yaftersampling,WaSVigorous事ystirredandfi]tered･Thesubsequentprocesswasthesameasthatdescribed

inthesection(1).Freshwaterwastreatedinthesame
WayaStheservicewater.

(4)Soil

The

depth

of

tide.

Service water.100史each.was

which

was

i11tOaCCOunt:(3)Servicewaterandfreshwater

Water

miItititeatthesamestatiorco"ected
by

tho

were

containershydrochhricacidandthenl(2)Airbornedust
dustwaswer

samples
addingconcentra

use.Two

Airborne

sti皇=
b眠血

POtyethvlene

collec如町抽eratio oflm史tolkofseaw

was

prev

shestood

than3bysamplet8

coliectedatth

5史OfdistilIedwaterandthewashingwascombinedto
filtrate,The

negligilaIso glVen

wascesiumcarrierswereadded.Thetraywaswashedwith

thecoIleじterrestribetoexpected

us■ng
filteredwassamp]ethewassamp軸gwasca汀iedoutwhf
few
days.To
thelastRainanddryfalloutwascoLlectedmonthlyona

fi"ed

water

sideration(1)RainanddryfalIout

was

Sea
where
was

1.

Seawater(引

EnvironmentalandDietaryMaterials★

Noslgnificant

obsenJedinthev
C.

Mud.siltandfin

A conventionalsedimentsal
COIlectlngthetopfewcentiI
ApproximateIy4kg
SPreadonaIargeporcelain(ovenatlO5tollOOctoac(7)Totaldiet

ofthe

w

㈱

Milk

(12)Fish,Shelffishan

Raw
and

was

miJk

coJJectedincommerciaJmilk

districts

producJngwaspurchasedin
consum.ng
districts･MiJkinastainJesssteeIpanoraporceJaindish
drynessto

WaSeVaPOrated

foJlowed

fiJterbycarbonizationa.

Seafishan

Fish

was

rinsedthepaper.Only

largersizedfish.andtl

andashing.

Sma"er

ones.EachsanStainJesssteelF)anOra
thesamplewasashedil(10)Vegetablesb.

SpinachandJapaneseradishweresefectedasthe
forleafvegetables

representatives

andfor non‑StarCh
She[Jsroots,reSPeCtively.Afterremov]ngSOil.theediblepartOfvegetablesamp[e

dried

was

was

fish.

StainlesssteeJpanoraporceJaindish.

Seaweeds

C.

Edible(11)Tea

tO

Water

Five

hundredgrams

ofmanufactured

green

tea

the

WaSCO"ected,CarbonizedandashedinastainIesssteeJ

seaweeds

remOVeWeighed,driedandashl
Tablelshowsdeta

TabJelDetaiJsofsampreco.Jection
SampleFrequencyofsampling=Environmentalmaterials=(1)Rainanddryfallout
lfordomesticprogrammonthly2

forWHOprogrammonthlyl2Servicewater(soursewater)
Servicewater(tapwater)

3

Freshwater

quarterly

Semiyearly(JuneandDecember)
Semiyearly(JuneandDecember)
yearly(fishingseason)(4)Soi1
1

0〜5cm

2

5〜20cm(5)Seawater(6)Seasediments=Dietarymaterials=

Sandsurface.These

PanOraPOrCelaindish.

(2)Airbornedust(3)ServicewaterandfreshwateroIco"ected

SheIIs.itwastreatedinaand6arbonizedin

Shellfish

Approximately

yearly(JuneorJuly)

yearly(JuneorJuly)
yearly(JulyorAugust)
yearly(JulyorAugust)vtFrequencyofsampling

Sample3

consumlngdistricts

semiyearly(FebruaryandAugust)

4

POWderedmilk

semiyearly(AprilandOctober)

3史
2〜(10)Vegetableslproduclngdistricts

2

consumlngdistricts(11)Tea(12)Fish,Shellfish,andseaweeds

2.

I

Sea且sh2Freshwaterfish

3

Shell且sh4

Seaweeds

andacid fromhydro･

cesiumwereelutedwith

the

50(
4 k

cationexchange

4 k
4 k
2

へ

acid by heating･Afterth(1)Rain,SerVicewaterandfreshwater
chloric

4k‑

yearly(fishingseason)
yearly(fishingseason)
yearly(fishingseason)
yearly(fishingseason)

PreparationofsamplesforanalYS‑S
Strontium

4k1

yearly(harvestingseason)
yearly(harveStingseason)
yearly(thefirstharvestingseason)column.The

withnitricacidtodrynesshydrochlwithextracted
insolublepartwasfilteredresidueofrainsampleonthefilterpaperwasashedin

washingswerecombinedf

anelectricmuffIefurnaceandtheashwasdissoIvedinhydroch‑oricacid･Theinsolublepartwasfi[teredandanalysIS.

dust.diet(5)Airborne

shellfish.seaweeds.t･
Theseashedsamples

washed.Thefiltrateandthewashingswerecombinedto the previous
eluate and used for radiochemical

procedureasthatdescribel

analYSIS.

(2)SoiI
Air･dried soilwas

passedthrougha20meshsieve.Thesievedsamplewasheated.inthepresenceof
strontiumand cesium carriers.togetherwithsodiumhydroxide･Thesamplewasthenheatedwithhydro･
filteredandpart waschloric acid and theinsoluble
washed.The

combinedsolutionof thewashingswasusedforradiochemicalanalysis･

filtrate and3.

Separationofstronti(1)Strontium･90
Samplesolutions.p

SeCtions2･(1)through2
SOdiumhydroxide.After!
theprecipitate

WaSSeParated.Theofstrontisuper]

for

two

for

weeks

strontium･90andyttrium･90to
attain equilibrium.Theyttrium･90wascoprecipitatedferric hydroxide

With

and

theprecIPltateWaSfiltered4.

supernatantfromseparatedthestrontium

stirrlng thesoJution.cesiumwasadsorbed

OnammOniummo]ybdophosphate.
After fiItered off andacid,theprecIPl

Determination
POtaSSiumfractioninthesolutionwasacidifiedwithhydrochloric
acid.While

the

tate.

Cesium･137
ThechemicaJyiel

Weighing

activityfromcesium･

Off.washedandcounted.

(2)

it,theprecipitate

waswasheddilute nitricwithdissoIvedin2.5N

sodiumtreatedA weighedamlheatin(
under

With

hydrochloricl

aliquotofashedsaml
fish.she"fishorhydroxidesoIution.AmmoniawasremovedcompleteIy

Chloric acid

fromthesolutionbyboiling.Thesolutionwasadjusted

When

topH8.2withhydrochloricacidanda[lowedtocooLhydroxidecame
Molybdenum
which
outin

appropriatevolumev
the

solu･

fiItered offandwashedwithwater.lnsuchtion.wasthat

Circumstanceontaminationbyrubidium･87wasstandardfo"owmgJOn‑eXChangeprocedurewasappJied.Afixedtium

ferric chloride

SOJution

dissoIved

Ammoniaandasdescribed

withmolybdenum

wassolution

2.5N

added

sodiumhydroxidetothehydroxide.

tetrasodiumsaltwasaddedtothefiltrateandwashings.
were
on
a
Cesiumandadsorbed
cationrubidium
resin.Cesium
wasseparated
byelutingwithhydrochloricacid.
To
removJng

this eluate
mOlybdenum

fromrubidium

orthefiJtrateandwashingsafterhydroxide.chloropJatinicacid

SOJutionwasaddedtoprecipitatecesium.TheprecIPト
tate

was

filter and

WaS

and

SOrPtionaPPliedpotassium

and

flame

tively.

wereremoved

above.EthyJenediaminetetraaceticacid

exchange

potassSeParatingcaJciumas
troscopYofwas

solutionnotnegJigib(eforthemeasurementofcesium･137.theamountsee

nitricnecessary.Th

SamP(eWithorfilteredontoataredpaperinademountablewashedwith waterand then ethanoJ.After
fixingthefilterpaperonataredplanchetteanddrying

5.

Counting
AftertheradioI

PreCipitateswerecou

groundbetacounters
COunting

rateswerel

recovery,Self･absorpI
COntent

Ofstrontium･

PerSamPlealiquot.F
these

nuclidesinthe(

6.Resutts(1=strontium･90andCesium‑137inRainanddryfa"out(fordomesticprogram)(fromJan.1983toJul.1983)‑CO〃血〟ed加m〃0.620f抽血p〟ム庇∂I/0/トー

TabIe(1)･1:Strontium･90andCesium･137RainanddryfaIlou
Precipitation

90sr

(mm)

(mCi/km2)

68.5

0.0030±0.0007

33.1

0.0030±0.0007

18.3

0.0050±0.0008

48.1

0.0030±0.0007

Futaba‑gun,FUKUSHIMA

20.0

0.0030±0.0007

Mito,IBARAGI

22.5

0.0030±0.0007

29.0

0.0020±0.0008

45.2

0.0020±0.0006

218.3

0.0080±0.0009

Shizuoka,SHIZUOKA

43.5

0.0000±0.0006

Nagoya,AICHI

23.0

0.0030±0.0007

39.9

0.0020±0.0006

21.6

0.0020±0.0006

105.3

0.0090±0.0009

Matsue,SHIMANE

68.6

0.0040±0.0007

Hiroshima,HIROSHIMA

39.8

0.0040±0.0007

28.5

0.0040±0.0007

40.6

0.0020±0.0007

Duration
Location(days)

January,1983
Aomori,AOMORI

Qjika‑gun,MIYAGIYamagata,YAMAGATA

Yokohama,KANAGAWA
Fukui,FUKUIKob,HYOGO
Tottori,TOTTORI

Dazaifu,FUKUOKA

293528

Matsuyama,EHIME

2828362731

Kyoto,KYOTO

2833292629

Shinjuku,TOKYO

3629352937

Sapporo,HOKKAIDO

0̲0010±0.0007

Duration

Precipltation

90sr

(mm)

(mCi/km2)

Location(days)
Mito,IBARAGI
Yokohama,KANAGAWA
Fukui,FUKUI

2929283029

Shinjuku,TOKYO

70.5

0.0020±0.000

68.0

0.0020±0.000

75.9

0.0020±0.000
0.0100±0.001

Shizuoka,SHIZUOKA

43.5

0.0010±0.000

Nagoya,AICHI

40.0

0.0030±0.000

35.9

0.0020±0.0001

29.5

0.0020±0.0001

43.5

0.0020±0.000̀

144.2

0.0100±0.000‑

Kyoto,KYOTO
Kob,HYOGO
Wakayama,WAKAYAMA

2929273029

208.4

Tottori,TOTTORI
Watsue,SHIMANE

31

88.7

0.0060±0.000｣

Hiroshima,HIROSHIMA

29

49.3

0.0030±0.000‑

Matsuyama,EHIME

30

55.0

0.0050±0.000̀

Dazaifu,FUKUOKA

29

78.4

0.0040±0.000■

Saga,SAGA

27

97.3

0.0030±0.000t

Nagasaki,NAGASAKI

29

81.5

O.0040±0.000｢Nakagaml‑gun,OKINAWA

29

172.5

0.0060±0.000j

Mムrch,1983
Sapporo,HOKKAIDO

0.0020±0.000つ

80.0

0.0050±0.0007

176.3

0.0070±0.0008

84.0

0.0030±0.0008

Futaba‑gun,FUKUSHIMA

143.0

0.0050±0.0007

Mito,IBARAGI

118.0

0.0040±0.0007

113.8

0.0030±0.000る

151.1

0.0050±0.0007

Qjika‑gun,MIYAGIYamagata,YAMAGATA

Yokohama,KANAGAWA
Fukui,FUKUI

3232323232

Shinjuku,TOKYO3232323232

72.0

Aomori,AOMORI

0.0040±0.0007

Shizuoka,SHIZUOKA

241.0

0.0040±0.0007

Nagoya,AICHI

155.0

0.0040±0.0007

133.3

0.0040±0.0007

102.2

0.0030±0.0006

55.5

0.0040±0.0007

Kyoto,KYOTO
Kob,HYOGO
Wakayama,WAKAYAMA

32333422

130.1

Duration
Location

Precipitation

90sr

(mm)

(mCi/km2)

24.5

0.0070±0.0008

30.9

0.0070±0.0008

107.1

0.0110±0.0010

70.1

0.0050±0.0008

Futaba‑gun,FUKUSHIMA

136.0

0.0030±0.0008

Mito,IBARAGI

158.5

0.0060±0.0008

123.6

0.0030±0.0007

171.9

0.0040±0.0007

186.3

0.0050±0.0008

Shizuoka,SHIZUOKA

389.5

0.0050±0.0008

Nagoya,AICHI

165.0

0.0050±0.0007

188.9

0.0040±0.0006

142.9

0.0040±0.0007

164.9

0.0050±0.0008

Tottori,TOTTORI

147.3

0.0110±0.0010

Hiroshima,HIROSHIMA

164.3

0.0060±0.0008

145.5

0.0040±0.0007

208.2

0.0060±0.0008

355.4

0.0050±0.0008

156.5

0.0040±0.0008

156.5

0.0050±0.0007

43.0

0.0070±0.0008

90.9

0.0060±0.0007

100.1

0.0080±0.0008

62.1

0.0040±0.0008

139.0

0.0030±0.0007

98.5

0.0040±0.0007(days)

April,1983
Aomori,AOMORI

Qjika‑gun,MIYAGIYamagata,YAMAGATA

Yokohama,KANAGAWA
Fukui,FUKUIKobe,HYOGO
Wakayama,WAKAYAMA

Dazaifu,FUKUOKA
Saga,SAGA

3132303732

Matsuyama,EHIME

異31293432

Kyoto,KYOTO

3231313232

Shinjuku,TOKYO3232313128

Sapporo,HOKKAIDO

Nagasaki,NAGASAKI
Nakagaml‑gun,OKINAWA

31

May,1983
Aomori,AOMORI

Qjika‑gun,MIYAGIYamagata,YAMAGATA

3131323234

Sapporo,HOKKAIDO

Futaba･gun,FUKUSHIMA
Mito.IBARAGI

31

Precipitation

90sr(days)(mm)(mCi/km2)

Dazaifu,FUKUOKA

33

178.7

0.0030±0.00C

Saga,SAGA

29

95.6

O.0040±0.00C

Nagasaki,NAGASAKI

31

262.5

O.0030±0.00C

221.5

O.0030±0.000

Duration
Location

Nakagaml‑gun,OKINAWA
June,1983
Sapporo,HOKKAIDO

3 .1止

59.0

0.0040±0.001

Aomori,AOMORI

3 1⊥

108.4

0.0090±0.001

qika‑gun,MIYAGI

3 1⊥

184.3

0.0100±0.000

Yamagata,YAMAGATA

31

56.6

0.0050±0.000

Futaba‑gun,FUKUSHIMA

32

143.0

0.0060±0.000

Shinjuku,TOKYO
Yokohama,KANAGAWA

1

190.5

0.0040±0.000

1

172.2

0.0040±0.000

3二3二3Mito,IBARAGI

2

225.1

0.0060±0.000

Fukui,FUKUI

2 00

95.2

0.0030±0.000

Nagoya,AICHI

3 1

259.0

0.0040±0.000

Kobe,HYOGO

3O

182.3

0.0040±0.000

Wakayama,WAKAYAMA

3 l

155.6

0.0030±0.000

Tottori,TOTTORI

3 l

143.8

0.0070±0.000

Hiroshima,HIROSHIMA

3l

197.2

0.0070±0.000･

Matsuyama,EHIME

3l

143.5

0.0010±0.000

1

165.1

0.0030±0.000

Nagasaki,NAGASAKI

3二3

Da2:aifu,FUKUOKA

0

279.5

0.0030±0.000■

Nakagami‑gun,OKINAWA

25

122.5

0.0020±0.000■

Yamagata,YAMAGATA

32

162.1

0.0030±0.000

Futaba‑gun,FUKUSHIMA

32

251.5

0.0040±0.000

Ko加,HYOGO

32

170.5

0.0000±0.000

Hiroshima,HIROSHIMA

32

242.4

0.0040±0.000

July,1983

Figure(1)‑1Samp=ng

Locationsof

1.Sapporo

12.Kyoto

2.Aomori

13.

3.Ojika‑gun

14.1〃akaYama

4.Yamagata

15.Tottori

5.Futaba‑gun

16.Matsue

6.Mito17.Hiroshima

7,Shinjuku

18.Matsuyama

RainanddryfaIIout

Kobe

8.Yokohama

19.Dazaifu

9.Fukui

20.SagalO.Shizuoka

21.Nagasakill.Nagoya

22.Nakagamトgun

S【A OFJAPAIu(1)･2Strontium･90andCesium･137inRainanddryFallout(forWHOprogram)(fromJan.1983toJu[.1983)‑CO/1r〟丁〟edわm〟0.氏28′抽血p〟ム庇∂r/0/丁‑Tabfe(1)･2:Strontium･90andCesium‑137inRainanddry

Location

Duration(days)

Precipitation

90sr

(mm)

(mCi/km2)

January,1983
Akita,AKITA

29

79.4

0.0050±0.000

Niigata,NIIGATA

28

102.6

0.0050±0.000

Kana2:aWa,ISHIKAWA

29

240.0

0.0090±0.000

Nagano,NAGAN0

29

32.0

0.0020±0.000

0saka,OSAKA

33

42.2

0.0020±0.000･

Okayama,OKAYAMA

29

27.0

0.0020±0.0001

Yamaguchi,YAMAGUCHI

27

70.0

0.0070±0.000.

Kochi,KOCHI

28

22.5

0.0030±0.0001

Kagoshima,KAGOSHIMA

28

44.7

0.0020±0.0001

35.8

0.0010±0.000l

0.0020±0.000

Chiba,CHIBA
FeburaⅣ,1983
Akita,AKITA

29

72.6

Niigata,NIIGATA

29

167.9

0.0060±0.000

Kanazawa,ISHIKAWA

30

215.0

0.0100±0.001

Nagano,NAGAN0

29

27.0

0.0030±0.000

0血b,OSAKA

29

33.7

0.0010±0.000

Okayama,OKAYAMA

29

31 2

0.0020±0.0001

Yamaguchi,YAMAGUCHI

30

4 3 5

0.0090±0.000‑

Kochi,KOCHI

29

63 6

0.0040±0.000■

Kagoshima,KAGOSHIMA

29

97 5

0.0040±0.000‑

29

00

7 1

0.0020±0.000J

Akita,AKITA

32

97 9

0.0030±0.000

Niigata,NIIGATA

32

72 2

0.0050±0.000

31l ′b′0 0

0.0060±0.000

Chiba,CHIBA

̲

●

̲

●

●

Mムrch,1983■

Kanazawa,ISHIKAWA●●

Location

認諾nPre諾;ion(m芸An2,

April,1983
Akita,AKITA

32

112.9

0.0040±0.0008

Niigata,NIIGATA

32

97.4

0.0090±0.0009

Kanazawa,ISHIKAWA

32

187.5

0.0090±0.0009

Nagano,NAGAN0

32

79.0

0.0030±0.0007

0saka,OSAKA

33

148.4

0.0030±0.0007

Okayama,OKAYAMA

32

120.1

0.0030±0.0007

Yamaguchi,YAMAGUCHI

31

220.0

0.0090±0.0009

Kochi,KOCHI

31

338.0

0.0100±0.0009

Kagoshima,KAGOSHIMA

32

554.1

0.0080±0.0009

Chiba,CHIBA

34

133.2

0.0040±0.0006

Akita,AKITA

3l

103.1

0.0050±0.0008

Niigata,NIIGATA

3l

67.3

0.0030±0.0006

Kanazawa,ISHIKAWA

3l

104.5

0.0020±0.0006

Nagano,NAGAN0

3l

85.6

0.0020±0.0006

0saka,OSAKA

31

120.4

0.0020±0.0007

Okayama,OKAYAMA

31

93.2

0.0020±0.0007

Yamaguchi,YAMAGUCHI

32

130.5

0.0060±0.0007

Kochi,KOCHI

32

199.4

0.0060±0.0007

Kagoshima,KAGOSHIMA

31

347.5

0.0050±0.0007

Chiba,CHIBA

29

77.0

0.0020±0.0009

Akita,AKITA

3l

189.2

0.0040±0.0007

Niigata,NIIGATA

3 1

54.0

0.0040±0.0007

Kana2:aWa,ISHIKAWA

30

87.0

0.0040±0.0008

Nagan0,NAGAN0

31

80.5

0.0030±0.0007

0saka,OSAKA

31

173.4

0.0030±0.0007

Okayama,OKAYAMA

3l

126.3

0.0030±0.0007

Yamaguchi,YAMAGUCHI

31

281.5

0.0070±0.0009

May,1983

June,1983

Figure(1)‑2Samp=ngLocationsofRainanddryfaIlout
1400
l.Akita
2.Niigata
3.Kanazawa
4.Nagano
5.Osaka
6.Okayama
7.Yamaguchi
8.Kochi
9.Katpshima
lO.Chiba

(2)Strontium･90andCesium･137inAirbornedust(fromOct.1982toJun.1983)‑CO〃rわ〟ed打0〝I〃0.620f抽仕p〟ム庇∂r/0〃‑

Table(2):Strontium･90andCesium･137inAirbornedust
90sr

Sampling

Absorpt10n

Periodvo山me(m3)(10.jpci/m3

Mito,IBARAGI

10〜1210,3680･02±0･03

Niigata,NIIGATA

10〜12

14,5200･10±0･02

Fukui,FUKUI

10〜1224,6160.04±0･01

Ogasa‑gun,SHIZUOKA

10〜12

11,2460･10±0･03

Nagoya,AICHI

10〜12

10,1030･04±0･03

Kyoto,KYOT0

10〜12

9,867

0･02±0･03

0saka,OSAKA

10〜12

7,776

0.10±0･04

Kobe,HYOGO

10〜12

9,724

0.05±0･03

Tottori,TOTTORI

10〜12

12,0580.00±0.02

Okayama,OKAYAMA

10〜12

10,1760.10±0･03

Hiroshima,HIROSHIMA

10〜12

10,8000.04±0･03

Nagasaki,NAGASAKI

10〜12

12,9530･10±0･02

11〜12

13,糾3

0.00±0･0

3

15,8990.05±0･0

3

10,3680.00±0･0

3

14,4970.02±0･0

3

21,0740.10±0･0

3

11,8130.05±0･0

3

10,2140.10±0.0

Location

October〜December,1982

November〜December,1982
Futaba‑gun,FUKUSHIMA
January〜March,1983
Futaba‑gun,FUKUSHIMAl〜Mito,IBARAGIl〜

Niigata,NIIGATAl

Fukui,FUKUIl〜Ogasa‑gun,SHIZUOKAl〜

Nagoya,AICHI

l

〜

〜

Location

90s

Sampling

Absorption

periodvolume(m3)(10‑3p(

Nagoya,AICHI

4〜6

9,635

0.10±

Kyoto,KYTOT0

4〜6

10,751

0.10±

0saka,OSAKA

4〜6

7,582

0.10±

Kobe,HYOGO

4〜6

9,948

0.20±

Tottori,TOTTORI

4〜6

13,8630.10±

Hiroshima,HIROSHIMA

4〜6

10,040

0.10±

Nagasaki,NAGASAKI

4〜6

11,9680.10±

Figure(2)Samp=ngLocationofAirbornedustl.Futaba･9un
2.Mit03.Niigata
4.Fukui
5.Ogasa‑gun
6.NagoYa
7.Kyot08.Osaka
9.Kob010.Tottori
ll.Okayama
12.Hiroshima
13.Nagasaki

S【▲OFJAIA〃

(3)Strontium･90andCesium･137inServicewater(fromDec.1982toJuI.1983)‑CO〃r〟?〟edかom〟0.丘20′抽血p〟ム庇∂が0〃‑

TabIe(3):Strontium‑90andCesium･137inServicewater

Location(SourceWater)
December,1982
Katsushika,TOKYO

0.070±0.005

MorlguChi,OSAKA

0.170±0.007

Fukuoka,FUKUOKA

0.090±0.006

January,1983
Sapproro,HOKKAIDO

7 0

Kyoto,KYOTO

6

●

●

′0

0.080±0.005
0.210±0.008

June,1983
Katsushika,TOKYO

6 7

0.070±0.005

Inuyama,AICHI

7 1

0.080±0.006

MorlguChi,OSAKA

7 0

0.190±0.007

Fukuoka,FUKUOKA′○
50.080±0.005

■

●

●

July,1983
Sapporo,HOKKAIDO

0.050±0.004(TapWater)
December,1982
Aomori,AOMORI
Fukushima,FUKUSHIMA
Katsushika,TOKYO
Niigata,NIIGATA

6･87･3■6･77･0

Wakkanai,HOKKAIDO

0.160±0.007
0.050±0.005
0.140±0.007
0.070±0.005
0.140±0.007

90sr

Location(pCi/史)Feburary,1983
Wakayama,WAKAYAMA

0.080±0.006

June,1983
Wakkanai,HOKKAIDO′0

Aomori,AOMORI

7

Yamagata,YAMAGATA

7

Mito,IBARAGI

6

Katsushika,TOKYO′00.100±0.006
0.070±0.005
0.070±0.005

0.030±0.004●8,871ム)一h)Niigata,NIIGATA

0.080±0.006
0.060±0.005

187

Yokohama,KANAGAWA.86

0.140±0.007

Kanazawa,ISHIKAWA

ノb

0.100±0.007

Fukui,FUKUI

7

0.010±0.003

Nagano,NAGANO

7

Nagoya,AICHI

6

Osaka,OSAKA′b

0.150±0.007

Kobe,HYOGO

7

0.130±0.007

Wakayama,WAKAYAMA

7

Tottori,TOTTORI

7

0.090±0.006

Okayama,OKAYAMA′00.090±0.005

Ube,YAMAGUCHI

7

Kochi,KOCHI

7

Fukuoka,FUKUOKA

60.100±0.006

Saga,SAGA

7

0.050±0.005

Nagasaki,NAGASAKI

7

0.050±0.004

9.1.3742.〇70.050±0.005
0.090±0.006.662.5.5

Kagoshima,KAGOSHIMA■30.080±0.005

0.090±0.006
0.050±0.004

0.010±0.003

July,1983
Fukushima,FUKUSHIMA′〇一′0

Sendai,MIYAGI0000

0.080±0.005
0.120±0.006

Matsuyama,EHIME

7 2

0.050±0.004

Naha,OKINAWA

7 4

0.080±0.006

Figure(3)Samp=ng

LocationsofServicewater

1.Wakkanai

16.Kyoto

2.Sapporo

17.Osaka

3.Aomori

18.Moriguchi

4.Sendai

19.

5.Yamagata

20.Wakayama

Kobe

6.Fukushima

21.Tottori

7.Mito22.Okayama

8.Katsushika

23.Ube9.Yokohama

24.MabuYama

lO.Niigata

25.Kochill.

Kanazawa

26.Fukuoka

12.

Fukui

27.Saga

13.Nagano28.Nagasaki

14.Na電PYa

29.Ka!PShima

15.tnuYama

30.NahaS【A OFJAPANStrontium･90andCesium‑137inFreshwater(4)(fromDec.1982toJuI.1983)‑CO〃r〟丁〟edか0/刀〟0.丘20′抽血p〟ム庇∂rわ〃‑

Table(4):Strontium･90andCesium･137inFreshwate
90sr

Location(pCi/史)December,1982
Mikata‑gun,FUKUI

0.250±0.009

Suwa‑1ak声,NAGANO

0.050±0.005

Uji,KYOTO

0.010±0.003

May,1983
Kasumlgaura‑1ake,IBARAGI

8.7

0.150±0.007

July,1983
Ishikari,HOKKAIDO

0.100±0.006

Akita,AKITA

0.140±0.007

Figure(4)Samp=ngLocationsofFreshwater
l.Ishikari
2.Akita
3.Kasumigaura‑lak0
4.Mikata‑gun
5.Suwa‑1ak0

6.Uji

(5)

Strontium‑90andCesium･137inSoiI(fromMay.1983toJuI.1983)‑CO/1r〟l〟ed加m〃0.620′抽血p〟ム庇∂r/0〃‑

Table(5):Strontium･90andCesium･137inSoi[

Location

90sr

Sampling

̲P̲̲‑̲̲""̲̲̲

Depth(Cm)(PCi/kg):ヲF̲̲▲̲̲..̲̲̲̲▼̲"̲‖̲..
(mCi/km2)(pCi

May,1983
0〜

Atsuml‑gun,AICHI

5

5〜20

43.0±

4.5

2.00±0.20

750.0

57.0±

4.8

8.40±0.71

370.0

530.0±12.0

8.40±0.20

1100.0690.0±14.0

77.00±1.60

1300.0June,1983
Kawabe‑gun,AKITA

0〜

5

5〜20

Ibusuki･gun,KAGOSHIMA

0〜

5

5〜20

150.0±

7.0

7.80±0.37

710.0

260.0±

9.0

30.00±1.00

340.0

160.0±

7.0

15.00±0.70

570.0

130.0±

7.0

19.00±1.00

410.0

Jnly,1983
Wakayama,WAKAYAMA

0〜
J′

5〜20

5

Figure(5)Samp=ng

LocationinSoil
1400

1

3
A.

琵仙
岬.馴ama.叩

2n